/Engine/Plugins/Experimental/MeshModelingToolsetExp/Source/MeshModelingToolsExp/Public/MeshAttributePaintTool.h
void ExternalUpdateValues ( int32 AttribIndex, const [TArray](API\Runtime\Core\Containers\TArray)< int32 > & VertexIndices, const [TArray](API\Runtime\Core\Containers\TArray)< float > & NewValues )